Dishwasher makes a loud banging or knocking noise during drain or fill.

Safety first: Turn off water and power before adjusting hoses.

• 1. Inspect inlet hose: Check that the water inlet hose is securely fastened and not banging against the cabinet or dishwasher frame when the valve opens or closes.
• 2. Secure drain hose: Ensure the drain hose is clipped or strapped to the cabinet wall and not free to slap around during pump operation.
• 3. Add cushioning: Use foam pipe insulation or zip ties to secure hoses and reduce noise from contact with hard surfaces.
• 4. Consider water hammer arrestor: If banging occurs in the household plumbing when the dishwasher fills, have a plumber install a water hammer arrestor near the shutoff valve.

Addressing hose movement and plumbing shock will protect both the dishwasher and your home’s pipes.